Plant tray



FIG. 1 is a perspective view of a plan tray showing my new design in position of use with a plant dolly which is shown in broken lines for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top view of my design;

FIG. 3 is a front side view of my design;

FIG. 4 is a bottom view of my design; and,

FIG. 5 is a cross sectional view thereof taken along line 5--5 in FIG. 2; 

The ornamental design for a plant tray, as shown and described. 